• The Kroll process is a pyrometallurgical industrial process used to produce metallic titanium from titanium tetrachloride. As of 2001 William Justin Kroll's...
    6 KB (692 words) - 21:10, 18 April 2025
  • The Betterton–Kroll Process is a pyrometallurgical process for refining lead from lead bullion (lead that still contains significant amounts of impurities)...
    9 KB (1,169 words) - 16:00, 23 May 2025
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    Titanium (redirect from Titanium Processing)
    The metal is extracted from its principal mineral ores by the Kroll and Hunter processes. The most common compound, titanium dioxide (TiO2), is a popular...
    81 KB (8,959 words) - 22:56, 21 June 2025
  • for inventing the Kroll process in 1940, which is used commercially to extract metallic titanium from ore. In 1909, Wilhelm Kroll graduated from Luxembourg's...
    8 KB (874 words) - 21:43, 24 January 2025
  • it was replaced by the more economical Kroll process, which was developed in the 1940s. In the Kroll process, TiCl4 is reduced by magnesium instead of...
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    chamber process, contact process) Titanium – (Hunter process, Kroll process) Zirconium – (Hunter process, Kroll process, van Arkel–de Boer process) A list...
    12 KB (1,292 words) - 11:37, 16 September 2024
  • Duff & Phelps. In 2021, Duff & Phelps decided to rebrand itself as Kroll, a process it completed in 2022. Duff & Phelps was founded in 1932 by William...
    36 KB (3,518 words) - 05:52, 2 April 2025
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    the Allegheny Technologies' Albany plants. This process was superseded commercially by the Kroll process. As seen in the diagram, impure titanium, zirconium...
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  • William Justin Kroll (1889–1973), Luxemburger metallurgist, inventor of the Kroll process Wolfgang Kroll (1906–1992), German physicist Alex Kroll (1937–2024)...
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    production of iron and steel, and the production of titanium in the Kroll process. Magnesium is used in lightweight materials and alloys. For example...
    81 KB (8,733 words) - 08:53, 20 June 2025
  • pyrometallurgical methods are preferred, such as the Parkes process followed by the Betterton-Kroll process. The process is named for its inventor Anson Gardner Betts...
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    sponge after VSMPO-Avisma. It produces titanium products using the Kroll process, and also produces silicon products. In 2010, increased demand for titanium...
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    (ZrI4), and was superseded in 1945 by the much cheaper Kroll process developed by William Justin Kroll, in which zirconium tetrachloride (ZrCl4) is reduced...
    49 KB (5,528 words) - 08:46, 13 June 2025
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    Lead (redirect from Lead processing)
    gold retrieved. De-silvered lead is freed of bismuth by the Betterton–Kroll process, treating it with metallic calcium and magnesium. The resulting bismuth...
    181 KB (19,422 words) - 20:03, 19 June 2025
  • Joachim Georg Kroll (17 April 1933 – 1 July 1991) was a German serial killer, child molester, necrophile and cannibal who murdered a minimum of eight...
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  • magnesium, or less commonly other alkali metals, hydrogen or calcium in the Kroll process Manganese Mn Mn2+ reacts with acids; very poor reaction with steam smelting...
    19 KB (1,026 words) - 18:59, 5 June 2025
  • labor- or energy-intensive technique for titanium refinement than the Kroll process? Does nitrogen admit metastable allotropes under standard conditions...
    11 KB (1,101 words) - 04:21, 21 June 2025
  • converted to the metal by reduction with magnesium or sodium, as in the Kroll process. HfCl 4 + 2 Mg → 1100   ∘ C Hf + 2 MgCl 2 {\displaystyle {\ce...
    47 KB (5,648 words) - 17:45, 23 May 2025
  • Hydrogen assisted magnesiothermic reduction (category Titanium processes)
    production of titanium metal is the formation of oxide impurities. The Kroll process, which is widely used commercially, addresses this challenge by converting...
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  • Titanium powder (category Metallurgical processes)
    equipment, and as a catalyst in chemical processes. The traditional technique of titanium production is via the Kroll process which involves chlorination of TiO2...
    10 KB (1,454 words) - 03:39, 5 March 2025
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    removing the oxygen and silica. This process, known as the Kroll process, was first applied to titanium. The Kroll process results in an alloy containing hafnium...
    16 KB (1,777 words) - 13:15, 15 November 2024
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    example the Betterton-Kroll process and the Betts electrolytic process. The non-lead metals are usually sold to other metal processing plants. The refined...
    15 KB (1,918 words) - 11:22, 11 April 2025
  • Thumbnail for Jesse Oatman Betterton
    was an American metallurgist. He developed the Betterton–Kroll process, an industrial process for removing bismuth from lead. in the 1930s. Born in Porter...
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    of Luxembourg City, 1999/2011 William Justin Kroll (1889–1973), metallurgist, invented the Kroll process in 1940 Gérard López (born 1971), Luxembourgish-Spanish...
    23 KB (1,314 words) - 12:01, 14 June 2025
  • hardware. Titanium sponge is an alloy product that is produced through the Kroll process, which includes leaching or heated vacuum distillation to make the metal...
    5 KB (528 words) - 04:31, 3 April 2025
  • Kroll is a surname. Kroll may also refer to: Kroll (film), a Polish thriller released in 1991 Kroll & Prumni, a war-game released in 1979 Kroll Show,...
    751 bytes (135 words) - 17:28, 2 September 2023
  • American adult animated coming-of-age sitcom created by Andrew Goldberg, Nick Kroll, Mark Levin, and Jennifer Flackett for Netflix. The series aired for eight...
    80 KB (6,722 words) - 05:27, 17 June 2025
  • particles, or the titanium sponge morphology created during the Kroll process." The Armstrong process was patented in 1999. In 2016 a paper by MacDonald et al...
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  • Development Process Gary Pollice, Liz Augustine, Chris Lowe, and Jas Madhur (2003). Software Development for Small Teams: A RUP-Centric Approach Per Kroll, Philippe...
    18 KB (2,281 words) - 05:49, 17 April 2025
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    production of iron and steel,[further explanation needed] and in the Kroll process for production of titanium. Calcium is used as a reducing agent in the...
    73 KB (7,366 words) - 16:38, 10 June 2025